The most common and most likely answer to this crossword clue is the 4 letter word GEES
G
E
E
S
Buddy explains!
The straight part
We know that "moves on" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case moves on = gees.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GEES mean?
GEES noun- A gee-gee, a horse.
- Of a horse, pack animal, etc.: to move forward; go faster; or turn in a direction away from the driver, typically to the right.
- To cause an animal to move in this way.
- To agree; to harmonize.
- The name of the Latin-script letter G.
- A guy.
- Vagina, vulva
- To suit or fit
- (plural "grand") A thousand of some unit of currency, such as dollars or pounds. (Compare G.)
- (plural "grands") A grand piano
- A grandparent or grandchild.
- The state or condition of having weight; weight; heaviness.
- The state or condition of being grave; seriousness.
- The lowness of a note.
- Force on Earth's surface, of the attraction by the Earth's masses, and the centrifugal pseudo-force caused by the Earth's rotation, resulting from gravitation.
- (in casual discussion, also) Gravitation, universal force exercised by two bodies onto each other (gravity and gravitation are often used interchangeably).
- Specific gravity.